Concrete-bucket.



w. D. LOOKWOOD.

' GQNGRETE BUCKET.

APPLICATIOI FILED SEPT. 17, 1909.

Patented July 6, 1909. i SHEETS-SHEET 1.

anw'ntoz WzZZam film/Mood fl f5 a 4 w a. m x w v V/ H l T Ow oowoofooo oo o own, a, mum on mommuwnlns. wnoammu. v. c.

WILLARD D. LOOKWOOD, OF SOHENEGTADY, NEW YORK.

CONCRETE-BUCKET.

Specification of Letters Patent.

Patented July 6, 1909.

Application filed. September 17, 1908. Serial 'No. 453,492.

To all whom it may concern:

Be it known that I, WILLARD D. LOCK- WOOD, a citizen of the United States, residing at Schenectady, in the county of Schenectady, State of New York, have invented certain new and useful Improvements in Concrete-Buckets; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to hoisting buckets and has a special reference to bottom dump buckets for concrete and the like.

The principal object of the invention is to provide an improved form of bottom dump buckets in which the bottom will automatically close after the load has been dumped and in which there are means for holding the bucket in open or closed position as desired.

Another object of the invention is to provide a common means, in buckets of this type, for holding. the buckets either open or closed.

With the above and other objects in view 1 the invention consists in general of a bucket provided with a pair of doors arranged to open in the middle, counterbalancing means for these doors, and a common means to hold said doors in either the open or closed position as desired.

The invention further consists in certain novel details of arrangement and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically set forth in the claims.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and Figure 1 is a side elevation of the bucket with the doors in the closed position. Fig. 2 is a similar view with the doors in the open position. F 3 is an end elevation of the bucket with the doors in the closed position. Fig. 4. is a similar view to Fig. 8 with the doors open.

The numeral 10 indicates the body of the bucket and this is provided at its upper and lower edges with reinforcing bands 11. P0- sitioned to project below the bottom edge of the bucket are angle irons 12 arranged in pairs and provided with perforations 13 wherein are su )ported bolts 14. At the bottom of the hue et are doors 15 provided with perforated lugs 16 projecting therefrom, the olts 14 before referred to passing through these perforations and thereby forming a hinge for the doors. Links 17 are each con nected to these doors by means of bolts 18 passing into the doors through slots 19. These links are pivoted together as at 20 and a lever 21 pivoted at 22 to the body of the bucket is also connected to the pivot points of the pairs of links 17. The levers 21 extend over t 1e sides of the bucket and have their outer ends connected by means of a leaded counterweight 23. This counterweight is of sufficient size to hold the bottom of the bucket in the position shown in Fig. 1 when the bucket is empty. In order to strengthen the side of the bucket at the pivot point 22 there is provided a plate 24 firmly riveted to the bucket and through which the pivot passes.

Guide plates 25 are provided for the purpose of holding the links 17 in proper position as well as to act as a stop to limit the downward movement of said links and hold the doors at the same angle as the sides of the bucket.

Clips 26 are mounted upon. the sides of the bucket above the guide lates 25 and through these clips passes a ho t 27 which is preferably termed. the locking bolt. Lugs 28 are also mounted on the sides of the bucket in alinement with the clips 26 and the stem of the locking bolt 27 passes through these lugs and is connected to a bail 29 which runs around from one looking bolt to the other.

Attached centrally of the bail 29 is a trip line 30. Each of the bolts 27 is provided with a shoulder 31. and springs 32 are held between this shoulder and the lugs 28 to normally force the bolts 27 toward. the links 1.7. Upon each of the links 17 adjacent the bolts 27 is attached a stop 33 arranged to hold said links in the position indicated in Fig. 1 and thus prevent the opening of the doors when the bucket loaded. These lugs are beveled on the up er side so that they will act to move the bolts 27 back against the tension of the springs 32 when the doors are being closed.

Upon each of the levers 21 is positioned a sto 34 so arranged as to force the bolts 27 bao ward when the doors are being opened and provided with a face adapted to contact with the bolts 27 and prevent the doors from being closed as long as the bolt remains in protended position. The relation of these parts will be best seen by reference to F 2.

At 35 is provided the usual hoisting handle rigidly attached to the sides of the bucket.

In the operation of the device let it be sup posed that the parts are in the position shown in Fig. 1 and the bucket loaded. When the bucket has been properly positioned. at the point Where it is desired to empty the contents of the bucket the trip line 30 is pulled and retracts the bolts 27 The stops 33 are thus freed from retention by the bolts and the doors 15 allowed to fall and assume the position shown in Fig. 2. il hen in this position it Will be noticed. that the doors 15 are held in alinement with the sides of the bucket and will be prevented from again closing by the bolts 27 taking position over the stops 3%.

When it is desired to close the bucket after the same has been thoroughly emptied it is only necessary to again pull the trip line 30. This retracts the bolts 27 from their position over the stops 34 and permits the counter- Weights 23 to draw up the doors 15 and close the device. The parts then assume the position in which they originally were as indicated by Fig. 1. It is to be noted that by the use of this device but one set of bolts is necessary to hold the doors either open or shut.

There has thus been provideda simple and eilicient device of the character described and. for the purpose specified.

It is obvious that minor changes may be made in the form and construction of the parts without departing from the material principles thereof. It is not therefore desired to confine the invention to the exact form herein shown and described, but it is Wished to include all such as properly come within the scope thereof.

Having thus described the invention, What is claimed as new, is

1.. In a concrete bucket, a bucket body, a counterbalanced. door l'iinged to the bottom thereof, a common means to releasably lock the door in open and closed position.

2. In a concrete bucket, a bucket body, a counterbalanced. door hinged to the bottom thereof, a link attached to saidv door, a lever supported on the bucket and attached to the link, a counterweight for said door attached to the lever, stops on the link and lover, and a common means to contact with said stops and releasably lock the door in open and closed position.

3. In a concrete bucket, a bucket body, a door hinged to the bottom thereof, a link attached to said door, a lever supported on the bucket and attached to the link, a counterweight for said door attached to the lever, stops on the link and lever, and a spring actuated bolt to contact with said stops and releasably lock the door and closed position.

4. In a concrete bucket, a bucket body, a door hinged to the bottom thereof, a link :iittached to said door, a lever supported on the bucket and attached to the link, a counterweight for said door attached to the lever, stops on the link and lever, a spring actuated. bolt to contact with said stops and lock the door in open and closed positions, and a trip cord to withdraw said. bolt and release said stops.

5. In a concrete bucket, a bucket body, a pair of counterbalanced doors each hinged to one side of the bottom thereof, and a common means to releasably lock said doors in open and closed positions.

6. In a concrete bucket, a bucket body, a pair of doors each hinged to one side of the bottom thereof, a pair of .links attached to said doors and pivotally joined together, a lever supported on the bucket and attached to the links at the pivot point, a counterweight for said door attached to the lever, stops on one of said links and the lever, and a common means to contact with said stops and releasably lock the door in open and closed position.

7. In a concrete bucket, a bucket body, a pair of doors hinged to each side of the bottom thereof, a pair of links each attached to one of said doors and pivotally united, a lever supported on the bucket and attached to said. links at the pivot point, a counterweight for said doors attached to the lever, stops on one of said links and the lever, and a spring actuated bolt to contact with said stops and releasably lock the door in open and closed position.

8. In a concrete bucket, a bucket body, a pair of doors each hinged to one side of the bottom thereof, a pair of links each attached to one of said doors and pivetally united, a lever supported on the bucket and attached to the links at the pivot point, a counterweight attached to the lever for said door, stops on the lever and one of said links, a spring actuated bolt to lock the doors in open and closed positions, and a trip cord attached to said bolt to Withdraw the same and release aid stop.

9. In a concrete bucket, a bucket body, a counterbalanced door connected to the bottom thereof by a pin and slot connection, a pair of links attached to said door by a pin and slot connection, a lever supported. on the bucket and attached to the links, a coun'eiwveight for said door attached to the lever, stops on the link and lever, and a spring actuated bolt to contact With said stops and releasably lock the door in open and closed positions.

10. In a concrete bucket, a bucket body, a pair of doors each attached to one side of the bottom thereof by a pin and slot connecin open tion, a pair of links each attached to one of to said bolt to Withdraw the same and 19 said doors by a pin and slot connection, release said stops.

said links being pivotally united, a lever su In testimony whereof, I aHiX my signature, lopted on 1the bucket and attached to tie in presence of tWo Witnesses.

inrs at t e ivot oint a counterwei ht attached to the leveii' for said doors, st ps WVILLARD LOOK on the lever and one of said links, a spring Witnesses: actuated bolt to lock the doors in open and 1 LOUISA S. LOOKWOOD, closed positions, and a trip cord attached CHARLES L. STEINROK. 

